JBL CSS 1S-T Compact Two-Way Loudspeaker 100V/70V/8 Ohms

JBL Professional CSS-1S/T - Compact 2-Way 100V/70V/8 Ω Loudspeaker with Wall Mount Included

The JBL Professional CSS-1S/T is a compact, two-way loudspeaker for commercial installations that can operate on 100V or 70V distributed lines or in direct mode into 8 Ω . Its 5.25” (LF) + 19mm dome (HF) configuration delivers full-range sound with a focus on voice clarity for background/foreground music and PA. It incorporates a 10W multi-tap transformer with rear power selection and comes with a swivel-type wall mount for precise speaker aiming. The structural polypropylene enclosure withstands continuous use, and spring-loaded terminals facilitate quick and secure connections.

Main features

• Connection versatility : 100 V/70 V with selectable taps or 8 Ω direct via rear switch.
• Transducers : 135 mm (5.25") woofer and 19 mm (0.75") polycarbonate dome tweeter .
• Multi-tap transformer : 100 V (10 W / 5 W) · 70 V (10 W / 5 W / 2.5 W).
• Power (8 Ω) : 60 W IEC (100 h, broadband pink noise).
• Response : 85 Hz–18 kHz (-10 dB) / 120 Hz–16 kHz (±3 dB).
• Sensitivity : 86 dB (1 W/1 m, average 1–10 kHz); Max SPL 106 dB (8 Ω) / 96 dB (tap 10 W).
• Nominal coverage : 120° × 120° ; Q = 6.2; DI = 7.9 dB.
• Crossover : 4.3 kHz (passive).
• Support : included , ball-and-socket type (adjustable) for wall mounting.
• Connectors : spring-loaded terminals.
• Construction : structural polypropylene enclosure; black color.
• Dimensions and weight : 229 × 159 × 143 mm (H × W × D); 2.0 kg per unit.

Product benefits

• One reference for all : operates on 100V, 70V or 8Ω to fit new or existing systems.
• Intelligibility and wide coverage : 120° × 120° pattern and voicing for clear voice over large areas.
• Quick installation : wall mount included and spring terminals for agile wiring.
• Professional reliability : JBL-quality drivers and crossover network; IEC 100h power test.

Use cases

• Retail, hospitality, and cafes: background music and voice prompts.
• Education and corporate spaces: multipurpose rooms, classrooms, hallways, and reception areas.
• Health centers and public facilities: PA systems with good intelligibility.

Frequently Asked Questions

• Can I use it without a transformer? Yes, by selecting 8 Ω DIRECT mode on the rear switch.
• Which 70/100V tap should I choose? It depends on the required level and distance: 10W for higher power, 5W/2.5W for quieter environments or close speakers.
• Can it be easily aimed? Yes, the ball-and-socket mount allows for precise pivoting and aiming.

Description for projects

JBL CSS-1S/T compact surface-mounted speaker (2-way): LF 135 mm + HF 19 mm dome; 100 V (10/5 W) and 70 V (10/5/2.5 W) transformer with rear switching; 8 Ω direct mode ; power 60 W (IEC, 8 Ω); response 85 Hz–18 kHz (-10 dB) / 120 Hz–16 kHz (±3 dB); sensitivity 86 dB (1 W/1 m); max. SPL 106 dB (8 Ω) / 96 dB (10 W); coverage 120° × 120°; crossover 4.3 kHz; spring-loaded terminal connection ; structural polypropylene enclosure (black); dimensions 229 × 159 × 143 mm; weight 2.0 kg; includes swivel wall bracket .